Planing-machine



G. TUGNOT.

Lathe.

UNITED STATES PATENT OFFICE.

DANIEL VAN FLEET, OF SANDUSKY CITY, OHIO.

PLANIN G-IVIACHIN E.

Specification of Letters Patent No. 12,009, dated November 28, 1854.

To all whom it may concern Be it known that I, DANIEL VAN FLEET, ofSandusky city, in the count-y of Erie and State of Ohio, have inventednew and useful Improvements in Planing-Machines; and I do hereby declarethat the following is a full, clear, and exact description of theconstruction and operation of the same, reference being had to theannexed drawings, which make a part of this specification.

I construct my machines with top and bottom plates which are connectedby posts upon which it stands. iron, and these together constitute theprincipal frame of the machine.

Figure 1 shows the top plate, or top of the machine. Fig. 2, is a sideview or elevation. Fig. 3, the top of the machine with the upper plateremoved.

The same letters in each of the figures in dicate the same parts in themachine.

In Fig. 1, A is the upper plate, B, B, two of the posts. 6, Z), Z), arethree arms, these are in pairs, each shown upon the top, having acorresponding arm at the bottom (see Fig. 2). These arms are attached tothe plates by bolts a, a, a, and turn upon them. 0, c, c, are threeother bolts, connecting the other end of the same arms in pairstogether, the bolt 0, on the left also connects the bed block Z, withthe knife frame S, S, and forms a joint, the bolt 0, also connects theother end of the knife frame with" the front roller frame T, T, whilethe bolt 0, connects the same roller frame on the right. These threebolts move in the slots (Z, d, d, which are curved to correspond withthe length of the arms.

The bed block Z, the knife frame S, S, and frontroller frame (T, T,) areshown in Figs. 2 and 3. E, is a bolt which secures one end of the backroller frame (marked M in Fig. 3,) the screw F, working against a spiralspring (dotted and marked 0, in Fig. 3) adjusts and holds the other end,not firmly, the spring allowing ,it to yield slightly. N, is a block ofwood or iron attached firmly to the plates. f, is the driving pulley. G,G, are mortises for the insertion of wedges which are kept in place bythe screws h, h. i,is a screw, is, a rolling nut, I a crank.

In Fig. 2, A, A, are the upper and lower plates; B, B, B, three of theposts; a, a, a, bolts; 12, b, b, b, Z), Z), are the three pairswof arms;0, c, 0", bolts; f, driving pulley; h, h,

All may be of cast screws; 2', a screw passing through the roll- I Allthese are seen and referredv block Z, having a hole through it countersunk on both sides, which the screw 5 works n, n, are convex washers ornuts on either side of the eye m, and attached to the screw 2'.

' G, g, G, g, are wedges in the mortises G,

G, kept in place by the screws 71., h, to secure the knife frame in itsproper place when once adjusted. S, S, is the knife frame, which by theremoval of the bolt 0, may be opened out wardly like a door on hinges,for grinding, v

changing or adjusting the knives.

T, T, is the front roller frame. In this frame is the large drivingwheel Q which moves the feed rollers by pinions (shown in red ink inFig.

In Fig. 3, M is the upper part of the back roller frame secured on theleft by the bolt E, and on the right held by the screw F. In the frameM, are friction rollers, 1, 2, 3, 4, &c., and also feed rollers withpinions (in red ink). ing wheel P, which also turns the wheel Q. Uponthe shaft of pulley f, is a pinion p, which gives motion to the drivingwheel P. t, t, t, t, t, are throats in the knife frame for the escape ofthe shavings, the side of each on the right being constructed in what isknown as the ogee form, so that when a shaving first enters the throat,it is met by the swelled or raised portion of the ogee, which slightlyresists its tendency to 'curl and passes it onward to the exact pointwhere shavings in common planes always clog. At this point they reachthe depressed part of the ogee and meeting no-resistance, never clog,but are discharged freely. In the opposite side of these throats areafiixed in any approved manner the knives, constructed so as best .tosuit the work to be done.

It will be perceived that I have provided a device for the adjustment ofthe planing knives, each to the receding surface of the plank as ashaving is successively taken o'lf by each knife, andthis adjustment hasThese are moved by a large driv-

